Nobuhiro Kosugi
Graduate University for Advanced Studies
259 Papers
2.3K Citations
Nobuhiro Kosugi is an academic researcher from Graduate University for Advanced Studies. The author has contributed to research in topics: Excited state & Absorption spectroscopy. The author has an hindex of 41, co-authored 256 publications. Previous affiliations of Nobuhiro Kosugi include University of Tokyo & Kyoto University.
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Papers
Electron energy loss and X-ray absorption spectroscopy of rutile and anatase: a test of structural sensitivity
TL;DR: In this paper, the electron energy loss and X-ray absorption spectra of two phases of titanium dioxide-rutile and anatase-were reported, and the authors proposed an interpretation of the Ti L2.3 edge, notably for the presence of a previously unobserved splitting on the L3 edge.
346
X-ray and Electron Spectroscopy of Water
Thomas Fransson,Yoshihisa Harada,Nobuhiro Kosugi,Nicholas A. Besley,Bernd Winter,John J. Rehr,Lars G. M. Pettersson,Anders Nilsson +7 more
TL;DR: An overview of recent developments of X-ray and electron spectroscopy to probe water at different temperatures and model systems such as the different bulk phases of ice and various adsorbed monolayer structures on metal surfaces are presented.
188
Efficient methods for solving the open-shell scf problem and for obtaining an initial guess. The “one-hamiltonian” and the “partial scf” methods
Nobuhiro Kosugi,Haruo Kuroda +1 more
TL;DR: The one-hamltonian method combined with the partial SCF method for obtaining an initial guess of the orbitals is tested on open-shell restricted SCF calculations of the 2 Σ + state of PO and several excited states of o 3 as discussed by the authors.
181
Strategies to vectorize conventional SCF-Cl algorithms
TL;DR: The conventional SCF-CI algorithm which is proposed here reduces I/O processing by eliminating all sorting routines and redundant integral files and generates directly nonzero and nonredundant PK integrals with a vectorizable canonically-ordered list.
137
Origin of the band gap in the negative charge-transfer-energy compound NaCuO2.
Takashi Mizokawa,Hirofumi Namatame,Atsushi Fujimori,K. Akeyama,Hiroshi Kondoh,Haruo Kuroda,Nobuhiro Kosugi +6 more
TL;DR: The electronic structure of the formally Cu 3+ (d 8 ) compound NaCuO 2 has been studied by photoemission spectroscopy and subsequent cluster configuration-interaction calculations and it is found that the d 8 →d 9 L (L: ligand hole) charge-transfer energy is negative and the ground state is dominated by the d 9 L configuration.
129